#include <stdio.h>
#include <stdlib.h>

int main(int argc, char**argv)
{
	int i,value;
	i = rand()%5;
	switch(i){
		case 0:
		value = 10;
		break;
		case 1:
		value = 20;
		break;
		default:
		value = 50;
		break;
	}
	printf("value=%d!\n", value);
	
	return 0;
}